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Pheidole Queen ID (Phoenix/Glendale, Arizona, Suburbs) 6-24-2015


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#1 Offline Herdo - Posted June 24 2015 - 12:14 PM

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This queen (along with several others over the past three days) was found floating dead in my pool.  I live in the suburbs of the Greater Phoenix area.  I originally posted this to the ants subreddit and found my way to antfarm.yuku.com through a comment made there.  Once there I was referred here by another user.


Body:
1. Location of collection:  Found floating in my pool.

2. Date of collection: 6-22-2015
3. Habitat of collection: While Phoenix is obviously a desert, my backyard is quite lush with dozens of trees and bushes. (I will post some pictures below)
4. Length: 7mm - 8mm from head to gaster. 
5. Coloration, hue, pattern and texture: Redish-brown head and thorax.  Black gaster.  Appears to be smooth and hairless.  She looks quite shiny under a magnifying glass.
6. Distinguishing characteristics: I can see only one petiole but there may be two.  Very large and round thorax.
 

 

Top Down:

 

Top Down: 

 

Front view: 

 

45 degrees: 

 

The pictures of my backyard were taken several months ago.  Anywhere you see dirt in the following pictures is grassy.

 

Habitat 1: 

 

Habitat 2: 

 

Habitat 3: 

 

 

I saw in another ID thread that Pheidole sp. are nearly impossible to ID without very detailed pictures of major and minor workers as well usually so I'm not expecting much.  :D



#2 Offline Gregory2455 - Posted June 24 2015 - 3:04 PM

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Pheidole (fallax-group) sp.


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#3 Offline Herdo - Posted June 24 2015 - 4:30 PM

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Thank you Gregory.  I am curious as to what characteristics are used to define the fallax group.  Is there a list somewhere of species that fall under the fallax group?

 

Thanks again.



#4 Offline cpman - Posted June 24 2015 - 5:05 PM

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Fallax-group are fairly large species that have curved antennal bases. There are quite a few species in this group. Some species in the US in this group are P. hyatti, P. desertorum, P. vistana, P. sitiens, and many others. I'm not sure of other characteristics aside from the curved antennal bases.

 

EDIT: Here is a some stuff that I found out about this species group on Google Books:

Pfallaxgroup_zps18ucm1nr.png


Edited by cpman, June 24 2015 - 5:12 PM.

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#5 Offline Herdo - Posted June 24 2015 - 6:59 PM

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Ah thanks.  I keep running across "Pheidole in the New World".  I may have to pick it up.  :yes:



#6 Offline cpman - Posted June 24 2015 - 7:27 PM

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Ah thanks.  I keep running across "Pheidole in the New World".  I may have to pick it up.  :yes:

I'd pick it up, but it is VERY pricy...



#7 Offline Herdo - Posted June 24 2015 - 8:31 PM

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Yea I noticed that last night when I kept coming across it.  I thought I'd pick it up but then noticed the price tag.  It makes sense considering most of the purchases are from college students.



#8 Offline kellakk - Posted August 24 2015 - 8:35 AM

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Now that you have majors, you can try to key this species out yourself with the US Pheidole key on AntWiki.  I can tell you that it is not fallax-group, though. My guess is maybe Pheidole obtusispinosa.


Current Species:
Camponotus fragilis

Novomessor cockerelli

Pogonomyrmex montanus

Pogonomyrmex rugosus

Manica bradleyi

 

 





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